Chey Tac was having bullet failures with the SMK prototypes at full pressure velocity so they had to have Sierra redesign the 350 gr MK. I would say the 1-12 would be nearly perfect for this bullet as its really quite stubby to be honest. Would have much rather seen them make a 375 or 380 gr version.

For the long Wildcat Bullets, I ordered a 1-10 Lilja for testing which should easily allow me to shoot up to a 400 gr ULD RBBT or 375 gr AT RBBT. Time will tell.